PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • For example, hydrogen halides such as hydrogen chloride and hydrogen iodide, nitrogen halides such as nitrogen trifluoride (NF3), sulfur halides such as sulfur hexafluoride (SF6), bimolecular halides such as Cl2 and various combinations thereof have been known to be used, often typically with an inert or noble gas such as helium.
http://www.w3.org/ns/prov#wasQuotedFrom
  • google.com